Know all about Marl and Appinite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Appinite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Appinite is Porphyritic. Marl appears Rough and Dull and Appinite appears Dull, Banded and Foilated. The luster of Marl is dull while that of Appinite is subvitreous to dull. Marl is available in beige, brown, green, grey, white colors whereas Appinite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Appinite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner.